Question about 2001 Ford Crown Victoria

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2001 crown vic leaks oil and makes knocking sound when i accelerate, what can this be and please dont say rod knock

My car leaks oil, but sounds and drives really good, except for what sounds like machine gun when I accelerate, what can this be and please don't say rod knock

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  • Magoos89
    Magoos89 Mar 30, 2014

    It sounds like you have a exhaust manifold leak. possibly a broken stud

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  • Ford Master
  • 5,501 Answers

Can be several things. I want to say spark knock. Don't remember if your engine came with a Knock sensor.

Also stretched timing chain or weak timing chain tensioner. Another term to look at is "valve rattle". This would give you closer to a machine gun sound than other things.

Posted on Mar 29, 2014

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Posted on Jan 02, 2017

emissionwiz
  • 75822 Answers

SOURCE: engine knock 1999 ford crown vic

Are u using the recommended fuel ? if so try running a couple of cans of fuel injection upper cylinder cleaner through the system with the next few tanks of gas, try LUCAS brand, it is among the best, the next step is to have the engine de-carboned by the dealer, this works very well, you can also remove an octane selection jumper, it retards the timing 2 degrees, that will most times stop the ping.

Posted on Sep 11, 2008

  • 6 Answers

SOURCE: My 2001 Ford Expedition started

If it's awd check front driveshaft, I have a 01 awd an had the same thing when I give it gas knocking get loud, I removed the front drive shaft an the sound is gone an my mpg has went from 10 mph to 17 mph, their Is a bearing on the trains, that goes bad an hooks up to the drive shaft you could change that . I have found out after I removed my drive shaft , buy I am having fun with my two wheel 5.4 lol

Posted on Apr 23, 2011

Autotroubles
  • 987 Answers

SOURCE: I have 1999 ford crown victoria has a sound as a lifter knock or harmonic off or main or something like a knock is there anything that can make my diagnois specific i do have a leak from my intake man

It could be a connecting rod knock, the best way would be to disable each spark plug by pulling the plug wire and if the knocking becomes lighter then thats the indication that particular knock is from that connecting rod or cylinder.

Posted on Mar 03, 2012

becky2172
  • 6 Answers

SOURCE: ford crown vic engine makes a knocking noise

sounds like you broke a connecting rod...drain your oil look for metal..

Posted on Mar 12, 2013

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